Fokina V. D.1, Gorev M. V.1,2, Bondarev V. S.1,2, Flerov I. N.1
1Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
2Siberian Federal University, Institute of Engineering Physics and Radio Electronics, Krasnoyarsk, Russia
Email: fokina@iph.krasn.ru, gorev@iph.krasn.ru, vbondarev@yandex.ru, flerov@iph.krasn.ru
The influence of various combinations and conditions of the electric field and temperature on the thermal expansion of Ba0.97Bi0.02TiO3 ceramics in the region of the ferroelectric phase transition Pm(3)m↔ P4mm was studied. The sequence of thermal/electrical processes required to obtain reliably reproducible results during thermal cycling has been established. The possibility of targeted variation within the limits of ~(20-30) % of the values both of the anomalous thermal expansion coefficient and deformation near and far from the transition temperature, respectively, is shown, which can undoubtedly be used at the stage of developing ceramic elements for miniature electromechanical devices. Keywords: phase transitions, ferroelectrics, thermal expansion, electric field.
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